TG and thyroid cancer: Significant differences were detected when the following values were compared: TSH (χ2 = 20.160, P <0.001), TgAb (χ2 = 14.142, P <0.001) and TMAb (χ2 = 15.026, P <0.001) but not fT3 (χ2 = 4.784, P = 0.306), fT4 (χ2 = 4.548, P = 0.337), and Tg (χ2 = 3.431, P = 0.180) among patients with and without thyroid cancer (Table 2).